made wxFFile a bit more safe: don't crash when Tell() and Length() are called on...

[wxWidgets.git] / src / mac / dcscreen.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        dcscreen.cpp
// Purpose:     wxScreenDC class
// Author:      Stefan Csomor
// Modified by:
// Created:     1998-01-01
// RCS-ID:      $Id$
// Copyright:   (c) Stefan Csomor
// Licence:       wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation "dcscreen.h"
#endif

#include "wx/dcscreen.h"
#include "wx/mac/uma.h"

#if !USE_SHARED_LIBRARY
IMPLEMENT_DYNAMIC_CLASS(wxScreenDC, wxWindowDC)
#endif

// Create a DC representing the whole screen
wxScreenDC::wxScreenDC()
{
#if TARGET_CARBON
    m_macPort = GetQDGlobalsThePort() ;
    GrafPtr port ;
    GetPort( &port ) ;
    SetPort( (GrafPtr) m_macPort ) ;
    Point pt = { 0,0 } ;
    LocalToGlobal( &pt ) ;     
    SetPort( port ) ;
    m_macLocalOrigin.x = -pt.h ;
    m_macLocalOrigin.y = -pt.v ;
#else
    m_macPort = LMGetWMgrPort() ;
    m_macLocalOrigin.x = 0 ;
    m_macLocalOrigin.y = 0 ;
#endif
     m_ok = TRUE ;
    BitMap screenBits;
    GetQDGlobalsScreenBits( &screenBits );
     m_minX = screenBits.bounds.left ;
 #if TARGET_CARBON
     SInt16 height ;
     GetThemeMenuBarHeight( &height ) ;
     m_minY = screenBits.bounds.top + height ;
 #else
     m_minY = screenBits.bounds.top + LMGetMBarHeight() ;
 #endif
    m_maxX = screenBits.bounds.right  ;
    m_maxY = screenBits.bounds.bottom ;
    MacSetRectRgn( (RgnHandle) m_macBoundaryClipRgn , m_minX , m_minY , m_maxX , m_maxY ) ;
    OffsetRgn( (RgnHandle) m_macBoundaryClipRgn , m_macLocalOrigin.x , m_macLocalOrigin.y ) ;
    CopyRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) m_macCurrentClipRgn ) ;
}

wxScreenDC::~wxScreenDC()
{
    // TODO
}